Home / 28,148.37-42,228-8,425.23

Finding the Fourth Proportional to 28,148.37, 42,228 and 8,425.23

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Solution

The fourth proportional to 28,148.37, 42,228 and 8,425.23 is: 12,639.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,148.37 : 42,228 = 8,425.23 : x
  2. Step 2: Convert to fraction form
    28,148.37/42,228 = 8,425.23/x
  3. Step 3: Cross multiply
    28,148.37x = 42,228 × 8,425.23
  4. Step 4: Simplify right side
    28,148.37x = 355,780,612.44
  5. Step 5: Solve for x
    x = 355,780,612.44/28,148.37
  6. Step 6: Final answer
    x = 12,639.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.